Diff Breather Routing - Pressure Issues?

[MudRunnerTD]

Yeah any hose will do, it's only air. No pressure and very little flow. It is not uncommon for guys to fit a $2 inline fuel
Filter to the end as the filter to stop rubbish going down the hose. Fuel hose seems an expensive way to do it. Any rubber or plastic pneumatic type hose for the win. Have a look at the kit 3dogs posted for an idea of the type of hose. It will see No Heat, No Pressure, no Oil, Just Air flow.